CN105071763A - Integrated photovoltaic inverter - Google Patents
Integrated photovoltaic inverter Download PDFInfo
- Publication number
- CN105071763A CN105071763A CN201510476350.XA CN201510476350A CN105071763A CN 105071763 A CN105071763 A CN 105071763A CN 201510476350 A CN201510476350 A CN 201510476350A CN 105071763 A CN105071763 A CN 105071763A
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- low
- voltage
- photovoltaic
- transformer
- direct current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Supply And Distribution Of Alternating Current (AREA)
- Inverter Devices (AREA)
Abstract
The invention relates to an integrated photovoltaic inverter. Direct current generated by a photovoltaic square array in a photovoltaic substation is connected to a low-voltage direct current circuit breaker (9) through a photovoltaic busbar box, and then is connected to photovoltaic inversion modules (14) through a direct current filter module (10) so as to convert the direct current into a low-voltage alternating current, the low-voltage alternating current is initially filtered through capacitors (2) and reactors (15) which are connected in parallel, and then is filtered again through an alternating current filter module (4) to be connected into a low-voltage alternating current contactor (5), and alternating current of which electric energy quality is improved is connected onto a low-voltage terminal of a combined transformer (1) through a voltage-voltage alternating current circuit breaker (8) and current transformer protectors (7), and is finally boosted and converted into high-voltage alternating current which can be directly accessed to a power grid through the combined transformer (1).
Description
Technical field
What the present invention relates to is a kind of integrated photovoltaic inverter, belongs to photovoltaic DC-to-AC converter technical field.
Background technology
Along with the development of photovoltaic industry, the also develop rapidly of the electric equipment and technology of photovoltaic, photovoltaic DC-to-AC converter and photovoltaic generation special-purpose combined type transformer technology are also like this, in practice, photovoltaic DC-to-AC converter can only realize low-voltage DC and be converted to low-voltage AC, if grid-connected, must with transformer with the use of, and in order to overhaul conveniently, it is between the two every at least three meters, this increases not only construction area and building cost, waste both it and connect a cable and other electrical signal cables, in order to save power station construction cost, a kind of integrated photovoltaic inverter that the present invention relates to well solves this problem.
Summary of the invention
The present invention propose be a kind of integrated photovoltaic inverter, its object in order to the direct current that photovoltaic arrays is produced directly is converted to can be grid-connected High Level AC Voltage.
Technical solution of the present invention: integrated photovoltaic inverter, its structure low-voltage direct circuit breaker (9) connects photovoltaic inversion modules (14) by DC filtering module (10), direct current Surge Protector (11) is in parallel with DC circuit breaker, photovoltaic inversion modules (14) is by capacitor (2) in parallel and reactor (15), ac filter module (4) is connected with low voltage AC contactor (5), and the outgoing line side of low voltage AC contactor (5) is connected with Technologies for AC Low Voltage Circuit Breakers (8) through current transformer (7), Technologies for AC Low Voltage Circuit Breakers (8) is connected on the low-pressure side sleeve pipe of combined transformer (1), interchange Surge Protector (13) and control transformer (3) are connected in parallel on the outgoing line side of Technologies for AC Low Voltage Circuit Breakers (8), secondary intelligent control system (12) and intelligent heat dissipation system (6) to be directly installed in inverter box body (16) thus to realize the function that electric equipment is converted to low-voltage DC High Level AC Voltage that can be grid-connected.
Operation principle: the direct current that in photovoltaic transformer station, photovoltaic arrays produces is connected on low-voltage direct circuit breaker (9) through photovoltaic combiner box, be connected to photovoltaic inversion modules (14) through DC filtering module (10) again and be converted into low-voltage AC, low-voltage AC is after capacitor (2) in parallel and the first filtering of reactor (15), low voltage AC contactor (5) is connected to after ac filter module (4) again filtering, the alternating current that improve the quality of power supply is connected on combined transformer (1) low-voltage terminal through Technologies for AC Low Voltage Circuit Breakers (8) summation current transformer protection (7) again, eventually pass combined transformer (1) boost conversion for High Level AC Voltage directly can be networked.
The invention has the beneficial effects as follows: the cost not only having saved equipment itself, also for the concrete erection unit of photovoltaic transformer station has saved cost of floor space, building cost, installation cost and saved the cost getting first and second cable with transformer mutually continuously, and compact conformation, multiple functional, convenient transportation, install simple and easy, inspection operation is simple, reliable.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of integrated photovoltaic inverter;
Accompanying drawing 2 is A-A cutaway views in Fig. 1.
In figure 1 is combined transformer, 2, and are capacitors, 3 are control transformers, 4 are ac filter modules, 5 are low voltage AC contactors, 6 are intelligent heat dissipation systems, 7 are current transformers, 8 are Technologies for AC Low Voltage Circuit Breakers, 9 are low-voltage direct circuit breakers, 10 are DC filtering modules, 11 are direct current Surge Protectors, 12 to be secondary intelligent control systems, 13 be that to exchange Surge Protector, 14 are photovoltaic inversion modules, 15 are reactors, 16 is inverter box bodies.
Embodiment
As shown in drawings, integrated photovoltaic inverter, its structure is that low-voltage direct circuit breaker (9) connects photovoltaic inversion modules (14) by DC filtering module (10), direct current Surge Protector (11) is in parallel with DC circuit breaker, photovoltaic inversion modules (14) is by capacitor (2) in parallel and reactor (15), ac filter module (4) is connected with low voltage AC contactor (5), and the outgoing line side of low voltage AC contactor (5) is connected with Technologies for AC Low Voltage Circuit Breakers (8) through current transformer (7), Technologies for AC Low Voltage Circuit Breakers (8) is connected on the low-pressure side sleeve pipe of combined transformer (1), interchange Surge Protector (13) and control transformer (3) are connected in parallel on the outgoing line side of Technologies for AC Low Voltage Circuit Breakers (8), secondary intelligent control system (12) and intelligent heat dissipation system (6) are directly installed in inverter box body (16).
Its workflow:
1) direct current that in photovoltaic transformer station, photovoltaic arrays produces is connected on the inlet wire side of low-voltage direct circuit breaker (9) of the present invention through photovoltaic combiner box;
2) direct current is converted into low-voltage AC through low-voltage direct circuit breaker (9), DC filtering module (10) through photovoltaic inversion modules (14);
3) low-voltage AC is after capacitor (2) in parallel and reactor (15) filtering for the first time, through ac filter module (4) filtering be connected to low voltage AC contactor (5) again;
4) alternating current that improve the quality of power supply is connected on combined transformer (1) low-voltage terminal through Technologies for AC Low Voltage Circuit Breakers (8) summation current transformer protection (7) again, eventually passes combined transformer (1) boost conversion for the High Level AC Voltage that can directly network;
5) wherein direct current Surge Protector (11) with exchange Surge Protector (13) and protect low pressure AC and DC side element respectively; intelligent heat dissipation system (6) ensures that in inverter box body, (16) all elements can run in suitable temperature; control transformer (3) is then that secondary intelligent control system (12) then ensures to monitor in real time when photovoltaic generation and protect for the subsidiary loop of whole electric equipment and control loop provide power supply.
During enforcement, low-voltage direct circuit breaker (9) connects photovoltaic inversion modules (14) by DC filtering module (10), direct current Surge Protector (11) is in parallel with DC circuit breaker, photovoltaic inversion modules (14) is by capacitor (2) in parallel and reactor (15), ac filter module (4) is connected with low voltage AC contactor (5), and the outgoing line side of low voltage AC contactor (5) is connected with Technologies for AC Low Voltage Circuit Breakers (8) through current transformer (7), Technologies for AC Low Voltage Circuit Breakers (8) is connected on the low-pressure side sleeve pipe of combined transformer (1), interchange Surge Protector (13) and control transformer (3) are connected in parallel on the outgoing line side of Technologies for AC Low Voltage Circuit Breakers (8), secondary intelligent control system (12) and intelligent heat dissipation system (6) are directly installed in inverter box body (16), which forms this novel electric equipment of a kind of integrated photovoltaic inverter.
Claims (2)
1. integrated photovoltaic inverter, it is characterized in that low-voltage direct circuit breaker (9) connects photovoltaic inversion modules (14) by DC filtering module (10), direct current Surge Protector (11) is in parallel with DC circuit breaker, photovoltaic inversion modules (14) is by capacitor (2) in parallel and reactor (15), ac filter module (4) is connected with low voltage AC contactor (5), and the outgoing line side of low voltage AC contactor (5) is connected with Technologies for AC Low Voltage Circuit Breakers (8) through current transformer (7), Technologies for AC Low Voltage Circuit Breakers (8) is connected on the low-pressure side sleeve pipe of combined transformer (1), interchange Surge Protector (13) and control transformer (3) are connected in parallel on the outgoing line side of Technologies for AC Low Voltage Circuit Breakers (8), secondary intelligent control system (12) and intelligent heat dissipation system (6) to be directly installed in inverter box body (16) thus to realize the function that electric equipment is converted to low-voltage DC High Level AC Voltage that can be grid-connected.
2. integrated photovoltaic inverter as claimed in claim 1, is characterized in that workflow: comprise,
1) direct current that in photovoltaic transformer station, photovoltaic arrays produces is connected on the inlet wire side of low-voltage direct circuit breaker (9) of the present invention through photovoltaic combiner box;
2) direct current is converted into low-voltage AC through low-voltage direct circuit breaker (9), DC filtering module (10) through photovoltaic inversion modules (14);
3) low-voltage AC is after capacitor (2) in parallel and reactor (15) filtering for the first time, through ac filter module (4) filtering be connected to low voltage AC contactor (5) again;
4) alternating current that improve the quality of power supply is connected on combined transformer (1) low-voltage terminal through Technologies for AC Low Voltage Circuit Breakers (8) summation current transformer protection (7) again, eventually passes combined transformer (1) boost conversion for the High Level AC Voltage that can directly network;
5) with direct current Surge Protector (11) with exchange Surge Protector (13) and protect low pressure AC and DC side element respectively; in inverter box body, (16) all elements can run in suitable temperature to utilize intelligent heat dissipation system (6) to ensure; control transformer (3) is then that secondary intelligent control system (12) then ensures to monitor in real time when photovoltaic generation and protect for the subsidiary loop of whole electric equipment and control loop provide power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510476350.XA CN105071763A (en) | 2015-08-06 | 2015-08-06 | Integrated photovoltaic inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510476350.XA CN105071763A (en) | 2015-08-06 | 2015-08-06 | Integrated photovoltaic inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105071763A true CN105071763A (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510476350.XA Pending CN105071763A (en) | 2015-08-06 | 2015-08-06 | Integrated photovoltaic inverter |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202602115U (en) * | 2011-11-29 | 2012-12-12 | 国网电力科学研究院 | High-power photovoltaic inverter cabinet |
| CN203166773U (en) * | 2012-12-28 | 2013-08-28 | 中国电力科学研究院 | Photovoltaic inverter alternating-current cabinet |
| CN203416177U (en) * | 2013-08-07 | 2014-01-29 | 阳光电源股份有限公司 | Photovoltaic inverter |
| CN203645556U (en) * | 2013-12-26 | 2014-06-11 | 常熟开关制造有限公司(原常熟开关厂） | Inverter device |
| CN203760866U (en) * | 2014-04-17 | 2014-08-06 | 南车株洲电力机车研究所有限公司 | Integrated cabinet of photovoltaic power generation system |
| CN204928738U (en) * | 2015-08-06 | 2015-12-30 | 河南森源电气股份有限公司 | Integrated form photovoltaic inverter |
-
2015
- 2015-08-06 CN CN201510476350.XA patent/CN105071763A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202602115U (en) * | 2011-11-29 | 2012-12-12 | 国网电力科学研究院 | High-power photovoltaic inverter cabinet |
| CN203166773U (en) * | 2012-12-28 | 2013-08-28 | 中国电力科学研究院 | Photovoltaic inverter alternating-current cabinet |
| CN203416177U (en) * | 2013-08-07 | 2014-01-29 | 阳光电源股份有限公司 | Photovoltaic inverter |
| CN203645556U (en) * | 2013-12-26 | 2014-06-11 | 常熟开关制造有限公司(原常熟开关厂） | Inverter device |
| CN203760866U (en) * | 2014-04-17 | 2014-08-06 | 南车株洲电力机车研究所有限公司 | Integrated cabinet of photovoltaic power generation system |
| CN204928738U (en) * | 2015-08-06 | 2015-12-30 | 河南森源电气股份有限公司 | Integrated form photovoltaic inverter |
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| C06 | Publication | ||
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Application publication date: 20151118 |